String to Int in C++

In C++, you can convert a string to an integer using the stoi function. Here is an example:

``c++ #include #include


int main() {

    std::string str = "123";

    int myInt = std::stoi(str);
std::cout << "The string is: " << str << std::endl;

    std::cout << "The integer is: " << myInt << std::endl;
return 0;

}



In this example, we first declare a string variable named str and initialize it with the value of "123". We then declare an integer variable named myInt and use the stoi function to convert the str variable to an integer.
Finally, we print out str and myInt using cout statements. The output of this program will be:



The string is: 123

The integer is: 123

Note that if the string cannot be converted to an integer, the stoi function will throw a std::invalid_argument or std::out_of_range` exception. You should be aware of this and handle these exceptions appropriately in your code.

String to Int in C++

See this concept in other languages